:root {
  --bg: #000;
  --fg: #fff;
  --muted: rgba(255, 255, 255, 0.7);
  --overlay: rgba(0, 0, 0, 0.45);
  --sidebar-width: 320px;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
body {
  overflow: hidden;
}
.page-shell,
.page-landing {
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}